This glass gets its name from its similarity to Cat's Eye Quartz and the unique way the two materials refract light. Also called Cat's Eye Glass.
Cat's Eye (Glass)
(also called Fiber Optic Glass) Created with manmade fiber optic glass, cat's eye refracts light in a way reminiscent of the oblong center of a cat's eye. This center appearance of movement is caused by chatoyance, which is defined as changeable luster or shine.